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Oval|Lab Grown|IGI

4.09ct D SI2 Oval Lab Grown Diamond

ID • D/SI2 • IGI LG831623850

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG831623850

Diamond specifications and retailer prices

From $783 AUD
$550 USD
As of October 29, 2026
Save $4,527 AUD (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,310 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.09ct lab-grown oval diamond

This 4.09ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831623850 or 831623850. Listed at 7 retailers as of October 29, 2026, with prices from $783 to $5,310, a $4,527 spread on the same certified stone. Brilliant Earth lists it at $5,310. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.09
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623850
Dimensions13.00 × 8.88 × 5.63 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.00 mm8.88 mm4.09 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623850
Side View
Table 59.0%Crown 33.1°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,310 AUD|Low: $783 AUD|High: $367,576 AUD|Avg: $12,093 AUD|-30.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5$783 AUD
Retailer 6$824 AUD
Retailer 7$1,165 AUD
Retailer 4$1,377 AUD
Retailer 2$1,441 AUD
Retailer 3$2,330 AUD
Retailer 8$2,658 AUD
Brilliant Earth$5,310 AUD

24 data points across 8 retailers

7 retailers$783 AUD to $5,310 AUD

A
Cheapest Retailer
-
$783 AUD
$550 USD
Final sale: no returns
Retailer 2
-
$824 AUD
£456 GBP
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$1,165 AUD
$818 USD
View
A
Retailer 4
-
$1,441 AUD
£797 GBP
View
B
Retailer 5
-
$2,330 AUD
$1,637 USD
View
B
Retailer 6
-
$2,658 AUD
$1,867 USD
View
Most Expensive
B
Brilliant Earth
21799313A · Oct 30
$5,310 AUD
$3,730 USD
View
6 more retailers have this diamond
Prices start from $783 AUDSave up to $4,527 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
4.09ct Oval
$783 AUD